设y=ln√x²+eⁿ求dy
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y=ln√(x^2+e^n) = (1/2)ln(x^2+e^n)
dy
=(1/2) dln(x^2+e^n)
=(1/2)[1/(x^2+e^n)] d(x^2+e^n)
=(1/2)[1/(x^2+e^n)] (2x dx)
=[x/(x^2+e^n)] dx
dy
=(1/2) dln(x^2+e^n)
=(1/2)[1/(x^2+e^n)] d(x^2+e^n)
=(1/2)[1/(x^2+e^n)] (2x dx)
=[x/(x^2+e^n)] dx
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